Shower valve



FIG. 1 is a perspective view of a shower valve showing our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof; and,

FIG. 4 is a side view thereof.

The broken lines in the drawings represent unclaimed portions of the shower valve and form no portion thereof. 

CLAIM The ornamental design for a shower valve, as shown and described. 